The bill aims to strengthen the primary care system in Massachusetts by establishing a comprehensive framework for defining, measuring, and reporting on primary care spending. It designates the Massachusetts Center for Health Information and Analysis (CHIA) as the agency responsible for developing a transparent methodology for measuring primary care expenditures, which will include a designated list of primary care services and provider types. The bill mandates that CHIA publicly post its methodology and conduct annual reviews to ensure its relevance and accuracy. Additionally, it proposes the creation of a Primary Care Technical Advisory Body to provide ongoing guidance on CHIA's data specifications and reporting. The bill also emphasizes the importance of annual reporting on primary care spending, with detailed breakdowns by insurance type, age groups, and payer, and suggests using this data to set future primary care spending targets.

Moreover, the bill introduces new reporting requirements for payers regarding expenditures related to Primary Care and Behavioral Health (PCBH) services, mandating accurate and consistent data submission across various reports. It specifies guidelines for capturing different types of spending, including behavioral health services in primary care settings and telehealth services, while ensuring distinct reporting to avoid overlap. The bill also establishes new categories and definitions for non-claims payments, such as shared savings and capitation, and outlines specific service categories for mental health and substance use disorders. Additionally, it introduces new definitions for insurance categories and member attribution methods, ensuring clarity in reporting. Overall, the legislation aims to enhance transparency and accountability in healthcare spending, improve data accuracy, and support the delivery of primary care services in Massachusetts.